scholarly journals Digiquartz pressure transducer calibration test results

1980 ◽  
Author(s):  
F. L. Bentzen
2004 ◽  
Vol 52 (606) ◽  
pp. 309-315 ◽  
Author(s):  
Hideo Sawada ◽  
Tetsuya Kunimasu ◽  
Shinichi Suda ◽  
Yasushi Mizoguti ◽  
Takumi Okada

2016 ◽  
Vol 2016 (HiTEC) ◽  
pp. 000051-000055 ◽  
Author(s):  
Ayden Maralani ◽  
Levent Beker ◽  
Albert P. Pisano

Abstract The main objective is to develop sensing systems by integrating transducers such as pressure sensing elements with the interface circuitry in one package that can withstand harsh environments, particularly high temperatures up to 600 °C. To achieve that, both pressure transducer and interface circuitry are individually required to operate and survive up to 600 °C with acceptable degrees of reliability. This paper reports performance evaluation of fabricated 4H-SiC JFETs along with differential pairs for use in the interface circuitry. The test results are very promising and show stable performances from 25 °C up to 600 °C. Moreover, design, fabrication, and early test of a SiC based circular diaphragm type pressure transducer is also reported.


Author(s):  
Nigel Johnston

An existing ISO standard frequency-domain method for measurement of speed of sound in a hydraulic pipeline is enhanced and extended in this article to include in situ measurement of pressure transducer calibration factors. Transducer mounting stresses are shown to cause variations in the calibration factors, and the proposed method can be used to eliminate these uncertainties, consequently improving the accuracy of the speed of sound. 95% confidence ranges in the speed of sound of less than ±0.1% have been achieved, and such high precision cannot be achieved by other practical methods. The method can also been extended to estimate viscosity and mean flow velocity, but accuracy is less good. Novel time-domain versions of the method are introduced. These may be valuable for real-time monitoring, and changes in speed of sound or calibration factor can be tracked with minimal delay. Some examples showing the effect of sudden aeration are presented; a sudden drop in speed of sound is apparent.


1999 ◽  
Vol 121 (1) ◽  
pp. 210-212
Author(s):  
Othon K. Rediniotis

The operating principles, as well as the technical aspects of the implementation of a new computer-controlled pressure standard are presented. The instrument can have dual use: either as a pressure source or as a pressure sensor. The device is intended mostly for use in problems where small differential pressures are of interest, i. e., 0–2.5 KPa and high accuracy is desired. Such a pressure range encompasses, for example, most of the pressure measurement applications in subsonic wind-tunnel testing. The device interfaces to a PC and is ideal for fully-automated pressure transducer calibration applications. The accuracy of the pressures produced or measured by the device is 0.08 percent F. S. (Full Scale).


Author(s):  
Hong-Seok Noh ◽  
Sangkyung Kim ◽  
Peter J. Hesketh ◽  
Hua Mao ◽  
Lid Wong

This paper presents miniature (diameter less than 1.5 mm) corrugated parylene/Cr/parylene diaphragms that provide ultra sensitive load-deflection (±100 μm for ±1kPa) and reflective surface for optical sensing. The design, fabrication, and test results of the ultra low pressure transducer for biomedical applications are reported here. The diaphragms have been attached to stainless steel tubes that are suitable for most endoscopes.


1975 ◽  
Author(s):  
R.K. McCardell ◽  
G.W. Cawood ◽  
C.M. Allison ◽  
C.G. Frederick

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